:root{--color-bg-primary: #f8fafc;--color-bg-secondary: #ffffff;--color-bg-tertiary: #f1f5f9;--color-text-primary: #0f172a;--color-text-secondary: #64748b;--color-text-muted: #94a3b8;--color-border: #e2e8f0;--color-border-hover: #cbd5e1;--color-accent: #2563eb;--color-accent-hover: #1d4ed8;--color-accent-light: #eff6ff;--color-success: #16a34a;--color-warning: #d97706;--color-error: #dc2626;--color-optimistic: #16a34a;--color-likely: #2563eb;--color-pessimistic: #dc2626;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--font-normal: 400;--font-medium: 500;--font-semibold: 600;--font-bold: 700;--radius-sm: 4px;--radius-md: 6px;--radius-lg: 8px;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 1px 3px 0 rgb(0 0 0 / .1);--transition-fast: .15s ease;--transition-normal: .2s ease}[data-theme=dark]{--color-bg-primary: #0f172a;--color-bg-secondary: #1e293b;--color-bg-tertiary: #334155;--color-text-primary: #f1f5f9;--color-text-secondary: #94a3b8;--color-text-muted: #64748b;--color-border: #334155;--color-border-hover: #475569;--color-accent: #3b82f6;--color-accent-hover: #60a5fa;--color-accent-light: #1e3a5f;--color-optimistic: #22c55e;--color-likely: #3b82f6;--color-pessimistic: #ef4444}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-sans);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{background-color:var(--color-bg-primary);color:var(--color-text-primary);min-height:100vh;transition:background-color var(--transition-normal),color var(--transition-normal)}#root{min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-weight:var(--font-bold);line-height:1.25}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-2) var(--space-4);font-size:var(--text-sm);font-weight:var(--font-medium);border-radius:var(--radius-md);border:1px solid transparent;cursor:pointer;transition:all var(--transition-fast);white-space:nowrap}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background-color:var(--color-accent);color:#fff;border-color:var(--color-accent)}.btn-primary:hover:not(:disabled){background-color:var(--color-accent-hover);border-color:var(--color-accent-hover)}.btn-secondary{background-color:var(--color-bg-secondary);color:var(--color-text-primary);border-color:var(--color-border)}.btn-secondary:hover:not(:disabled){background-color:var(--color-bg-tertiary);border-color:var(--color-border-hover)}.btn-ghost{background-color:transparent;color:var(--color-text-secondary);border-color:transparent}.btn-ghost:hover:not(:disabled){background-color:var(--color-bg-tertiary);color:var(--color-text-primary)}.btn-icon{padding:var(--space-2);border-radius:var(--radius-md)}.input{width:100%;padding:var(--space-2) var(--space-3);font-size:var(--text-sm);font-family:inherit;background-color:var(--color-bg-secondary);color:var(--color-text-primary);border:1px solid var(--color-border);border-radius:var(--radius-md);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.input:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 3px var(--color-accent-light)}.input::placeholder{color:var(--color-text-muted)}.input-number{text-align:center;font-family:var(--font-mono)}.card{background-color:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:background-color var(--transition-normal),border-color var(--transition-normal)}.card-highlight{background-color:var(--color-accent-light);border-color:var(--color-accent)}.app-container{display:flex;flex-direction:column;min-height:100vh}.app-header{background-color:#0f172a;color:#fff;padding:var(--space-4);display:flex;justify-content:space-between;align-items:center;box-shadow:var(--shadow-md)}.app-main{flex:1;display:flex;flex-direction:column}@media(min-width:768px){.app-main{flex-direction:row}}.panel-left{width:100%;padding:var(--space-6);background-color:var(--color-bg-secondary);border-right:1px solid var(--color-border);overflow-y:auto}@media(min-width:768px){.panel-left{width:42%}}.panel-right{flex:1;padding:var(--space-6);background-color:var(--color-bg-primary);overflow-y:auto}.task-row{display:grid;grid-template-columns:4fr 2fr 2fr 2fr 1fr;gap:var(--space-2);align-items:center;padding:var(--space-2);background-color:var(--color-bg-tertiary);border:1px solid var(--color-border);border-radius:var(--radius-md);transition:border-color var(--transition-fast)}.task-row:hover{border-color:var(--color-accent)}.task-row .delete-btn{opacity:0;transition:opacity var(--transition-fast)}.task-row:hover .delete-btn{opacity:1}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-4)}@media(min-width:768px){.stats-grid{grid-template-columns:repeat(4,1fr)}}.stat-box{padding:var(--space-4);border-radius:var(--radius-lg);border:1px solid var(--color-border);background-color:var(--color-bg-secondary)}.stat-label{font-size:var(--text-xs);font-weight:var(--font-semibold);text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-muted);margin-bottom:var(--space-1)}.stat-value{font-size:var(--text-2xl);font-weight:var(--font-bold);color:var(--color-text-primary)}.stat-unit{font-size:var(--text-sm);font-weight:var(--font-normal);color:var(--color-text-muted);margin-left:var(--space-1)}.stat-subtext{font-size:var(--text-xs);color:var(--color-text-muted);margin-top:var(--space-1)}.tab-group{display:flex;padding:var(--space-1);background-color:var(--color-bg-tertiary);border-radius:var(--radius-lg)}.tab-btn{padding:var(--space-1) var(--space-3);font-size:var(--text-xs);font-weight:var(--font-medium);color:var(--color-text-muted);background:transparent;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.tab-btn:hover{color:var(--color-text-secondary)}.tab-btn.active{background-color:var(--color-bg-secondary);color:var(--color-text-primary);box-shadow:var(--shadow-sm)}.warning-box{display:flex;gap:var(--space-3);padding:var(--space-4);background-color:#fef3c7;border:1px solid #f59e0b;border-radius:var(--radius-lg)}[data-theme=dark] .warning-box{background-color:#f59e0b1a;border-color:#f59e0b4d}.warning-box h4{font-size:var(--text-sm);color:#92400e}[data-theme=dark] .warning-box h4{color:#fbbf24}.warning-box p{font-size:var(--text-xs);color:#78350f}[data-theme=dark] .warning-box p{color:#fbbf24cc}.add-task-btn{width:100%;padding:var(--space-2);border:2px dashed var(--color-border);border-radius:var(--radius-md);background:transparent;color:var(--color-text-muted);font-size:var(--text-sm);font-weight:var(--font-medium);cursor:pointer;display:flex;align-items:center;justify-content:center;gap:var(--space-2);transition:all var(--transition-fast)}.add-task-btn:hover{border-color:var(--color-accent);color:var(--color-accent);background-color:var(--color-accent-light)}.chart-container{height:320px;width:100%}.education-sidebar{position:absolute;top:0;right:0;width:320px;height:100%;background-color:var(--color-bg-secondary);border-left:1px solid var(--color-border);padding:var(--space-6);overflow-y:auto;box-shadow:-4px 0 16px #0000001a;z-index:50}.education-sidebar h3{font-size:var(--text-base);margin-bottom:var(--space-4)}.education-sidebar h4{font-size:var(--text-sm);margin-bottom:var(--space-1)}.education-sidebar p{font-size:var(--text-sm);color:var(--color-text-secondary);margin-bottom:var(--space-4);line-height:1.6}@keyframes spin{to{transform:rotate(360deg)}}.animate-spin{animation:spin 1s linear infinite}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}